Backward production in pi minus plus proton goes to neutron pi plus pi minus at 8 GeV/c
Mollet, William Lee; Eisenstein, Bob I.
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https://hdl.handle.net/2142/25668
Description
Title
Backward production in pi minus plus proton goes to neutron pi plus pi minus at 8 GeV/c
Author(s)
Mollet, William Lee
Eisenstein, Bob I.
Issue Date
1976
Department of Study
Physics
Discipline
Physics
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
backward production
neutron
proton
fast forward neutral hadron
quasi two body production
Language
en
Abstract
This thesis reports on events of the form pi- p + npi+pi- where the neutron
is produced fast and forward in the laboratory. The data were obtained in an
initial exposure of 160,000 pictures in the University of Illinois - Argonne
National Laboratory streamer chamber using an 8 GeV/c pion beam. The chamber
was triggered by the detection of a fast forward neutral hadron interacting
in an array of thick plate optical spark chambers. The dominant feature of
the data is quasi two body production of npo and nfo intermediate states. The
differential cross section for po production shows evidence for backward
peaking near u' = O. The fO decay angular distributions appear to be consistent
with the hypothesis of u channel proton exchange as the dominant production
mechanism. For both np0 and nf0 production the observed cross sections are
on the order of one microbarn.
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